/**
* rollbackSavePoint
* releases given savepoint
*
* @param string $savepoint name of a savepoint to rollback to
* @return void
*/
public function rollbackSavepoint($savepoint)
{
if (!$this->_platform->supportsSavepoints()) {
throw ConnectionException::savepointsNotSupported();
}
$this->_conn->exec($this->_platform->rollbackSavePoint($savepoint));
}
